Comparison of biomechanical breast models: a case study

C Tanner, A Degenhard, J A Schnabel, A D Castellano-Smith, C Hayes, L I Sonoda, M O Leach, D R Hose, D L G Hill, D J Hawkes

Research output: Chapter in Book/Report/Conference proceedingConference paper

20 Citations (Scopus)

Abstract

We present initial results from evaluating the accuracy with which biomechanical breast models based on finite element methods can predict the displacements of tissue within the breast. We investigate the influence of different tissue elasticity values, Poisson's ratios, boundary conditions, finite element solvers and mesh resolutions on one data set. MR images were acquired before and after compressing a volunteer's breast gently. These images were aligned using a 3D non-rigid registration algorithm. The boundary conditions were derived from the result of the non-rigid registration or by assuming no patient motion at the deep or medial side. Three linear and two non-linear elastic material models were tested. The accuracy of the BBMs was assessed by the Euclidean distance of twelve corresponding anatomical landmarks. Overall, none of the tested material models was obviously superior to another regarding the set of investigated values. A major average error increase was noted for partially inaccurate boundary conditions at high Poisson's ratios due to introduced volume change. Maximal errors remained, however, high for low Poisson's ratio due to the landmarks closeness to the inaccurate boundary conditions. The choice of finite element solver or mesh resolution had almost no effect on the performance outcome. (23 References).
Original languageEnglish
Title of host publicationProceedings of SPIE - the International Society for Optical Engineering
Place of PublicationBELLINGHAM
PublisherSpie-Int Society Optical Engineering
Pages1807 - 1818
Number of pages12
ISBN (Print)0-8194-4429-4
Publication statusPublished - 2002
EventMedical Imaging 2002 Conference - SAN DIEGO, CALIFORNIA
Duration: 1 Jan 2002 → …

Publication series

NamePROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)

Conference

ConferenceMedical Imaging 2002 Conference
CitySAN DIEGO, CALIFORNIA
Period1/01/2002 → …

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